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Nuclear Theory·nucl-th

Thursday·June 22, 2023

10 papers—6 primary·4 cross-listed

All10Primary6Cross-lists4
  1. 01

    Chiral symmetry breaking and phase diagram of dual chiral density wave in a rotating quark matter

    S. M. A. Tabatabaee🇮🇷

    We study the inhomogeneous phase of a two-flavor quark matter under rotation at finite temperature and density using the Nambu-Jona-Lasinio model. To do this, we consider the chiral broken phase, in particular, described by the so-called dual chiral density wave which is formed as a standing wave of simultaneous scalar and pseudoscalar condensates. The solution of the corresponding Dirac equation as well as the energy spectrum found in the mean-field approximation. We then use the thermodynamic potential calculated for this model, to study the and dependence of constituent mass and the wave vector at . We find there exist two islands in the plane that the dual-chiral density wave survives. The first region lies at intermediate densities and small . We observe, by increasing the angular velocity of matter, dual-chiral density wave forms in regions with smaller chemical potential. On the other hand, in contrast to the former, the second region is located at the large and small densities. Finally, we study this phase of quark matter at finite temperature and present , , and phase portraits of a hot-rotating quark matter at finite density.

    nucl-thhep-phPRD(2023)·13 citations
  2. 02

    Superheavy Elements and Ultradense Matter

    Evan LaForge🇺🇸 · Will Price🇺🇸 · Johann Rafelski🇺🇸

    In order to characterize the mass density of superheavy elements, we solve numerically the relativistic Thomas-Fermi model of an atom. To obtain a range of mass densities for superheavy matter, this model is supplemented with an estimation of the number of electrons shared between individual atoms. Based on our computation, we expect that elements in the island of nuclear stability around will populate a mass density range of g/cm. We then extend our method to the study of macroscopic alpha particle nuclear matter condensate drops.

    nucl-thhep-phphysics.atom-phEur.Phys.J.Plus(2023)·1 citation
  3. 03

    Structure of Heavy Nuclei Based on Nucleon Quartets

    Alejandro Restrepo-Giraldo

    Several topics concerning nuclear structure and electromagnetic interactions of heavy nuclei are reviewed. These comprehend the deformed single-particle shell model, nuclear collective motion, symmetry breaking and approximate symmetry restoring in atomic nuclei, particularly the proxy-SU(3) scheme. The relations between these theoretical frameworks are stated and it is shown how they contribute to a better and broader understanding of atomic nuclei. The semi-microscopic algebraic quartet model of atomic nuclei in the proxy-SU(3) scheme is applied to obtain previously unknown irreducible representations, deformation parameters, nuclear excited states and electromagnetic transition probabilities for certain heavy isotopes. The experimental data available for such nuclear region is currently very poor, so in preparation for future experimental efforts the theoretical background is developed along with some perspectives to work on are proposed.

    nucl-th2 citations
  4. 04

    Exploring the chiral and deconfinement phase transitions in a self-consistent PNJL model

    Xiaozhu Yu🇨🇳 · Liangkai Wu🇨🇳 · Lang Yu🇨🇳 · Xinyang Wang🇨🇳

    In this work, we study the chiral and deconfinement phase transitions in a two-flavor Polyakov loop extended Nambu--Jona-Lasinio (PNJL) model. And note that the self-consistent mean field approximation is employed by introducing an arbitrary parameter to measure the weights of the Fierz-transformed interaction channels. By making use of this model, we systematically investigate the chiral and deconfinement phase transition lines (as well as the chiral ones in the NJL model for comparison) under different values of . It is found that, the increasing of helps to enhance the chiral (pseudo)critical temperature at fixed chemical potential, and also to enhance the chiral (pseudo)critical chemical potential at fixed temperature. And the critical end point (CEP) vanishes when becomes large enough. Besides, we find that the incorporation of Polyakov loop increases but does not change for small values of .

    nucl-thhep-phEPJA(2024)·2 citations
  5. 05

    Superscaling in the resonance region for neutrino-nucleus scattering: The SuSAv2-DCC model

    J. Gonzalez-Rosa · G. D. Megias · J. A. Caballero · M. B. Barbaro

    In this work the SuSAv2 and dynamical coupled-channels (DCC) models have been combined and tested in the inelastic regime for electron and neutrino reactions on nuclei. The DCC model, an approach to study baryon resonances through electron and neutrino induced meson production reactions, has been implemented for the first time in the SuSAv2-inelastic model to analyze the resonance region. Within this framework, we also present a novel description about other inelasticities in the resonance region (SoftDIS). The outcomes of these approaches are firstly benchmarked against (e,e') data on 12C. The description is thus extended to the study of neutrino-nucleus inclusive cross sections on 12C and 40Ar and compared with data from the T2K, MicroBooNE, ArgoNEUT and MINERvA experiments, thus covering a wide kinematical range.

    hep-phnucl-thPRD(2023)·12 citations
  6. 06

    A Poincaré covariant cascade method for high-energy nuclear collisions

    Yasushi Nara🇯🇵 · Asanosuke Jinno🇯🇵 · Tomoyuki Maruyama🇯🇵 · Koichi Murase🇯🇵 · Akira Ohnishi🇯🇵

    We present a Poincaré covariant cascade algorithm based on the constrained Hamiltonian dynamics in an -dimensional phase space to simulate the Boltzmann-type two-body collision term. We compare this covariant cascade algorithm with traditional -dimensional phase-space cascade algorithms. To validate the covariant cascade algorithm, we perform box calculations. We examine the frame dependence of the algorithm in a one-dimensionally expanding system as well as the compression stages of colliding two nuclei. We confirm that our covariant cascade method is reliable to simulate high-energy nuclear collisions. Furthermore, we present Lorentz-covariant equations of motion for the -body system interacting via potentials, which can be efficiently solved numerically.

    nucl-thhep-phnucl-exPRC(2023)·11 citations

Affiliations

first authorsco-authorsvia INSPIRE